| 摘要 |
An apparatus for releasably holding a toolholder (25) with a shank (30) having lockable surfaces, comprising: a tool support member (15) having a forwardly facing surface (35) and a bore (40) along a longitudinal axis (L), wherein the bore (40) intersects the forwardly facing surface (35) and extends rearwardly therefrom for receiving the shank (30) of the toolholder (25); an actuating bolt (20) positioned within the tool support member (15) along a radial axis (R1) relative to the longitudinal axis (L) and having a first end (22) with a bolt locking segment (65) having a bolt locking surface (70); an actuating nut (75) rotatably fixed within the tool support member (15), threadably secured to a second end (24) of the actuating bolt (20) and having a nut locking segment (80) having a nut locking surface (88); wherein rotation of the actuating bolt (20) in a locking direction causes the nut locking surface (88) and the bolt locking surface (70) to be drawn together to engage the toolholder lockable surfaces and to lock the toolholder within the tool support member (15); characterized in that the bolt locking surface (70) extends around the periphery of the actuating bolt (20) and forms a cone having a centerline about the axis (R1) of the actuating bolt (20). <IMAGE> |
